Grieve’s 2000°F Inert Atmosphere, Heavy-Duty Furnace Used for Turbine Components


No. 1039 is a 2000°F (1093°C) inert atmosphere, heavy-duty furnace from Grieve that is currently being used for heat treating turbine components at the customer’s facility. Workspace dimensions of this furnace measure 36" w x 60" d x 36" h. Also, 73 kW are installed in ICA wire coils supported by vacuum-formed ceramic fiber installed on all interior surfaces, including the door and beneath the hearth.

This Grieve inert atmosphere furnace has a roof-mounted, heat-resisting alloy circulating fan powered by a 1-hp motor with V-belt drive, water cooled bearings, and inert atmosphere shaft seal. Furnace features include: 9-inch-thick insulated walls comprised of 5 inches of 2300°F ceramic fiber and 4 inches of 1900°F block insulation and 8½-inch floor insulation comprised of 4 ½ inches of 2300°F firebrick and 4 inches of 1900°F block insulation. Other features include ¼-inch plate exterior reinforced with structural steel and ½-inch steel face plate at doorway with air-operated vertical lift door. Inert atmosphere construction includes continuously welded outer shell, high-temperature door gasket, sealed heater terminal boxes, inert atmosphere inlet, inert atmosphere outlet, inert atmosphere flow meter, and manual gas valve.

Controls on No. 1039 include a digital programming temperature controller, a manual reset excess temperature controller with separate contactors, paperless event recorder, and SCR power controller.

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